Sunan Abi Dawud 4056
سنن أبي داود#4056SahihNarrated Anas:The Messenger of Allah (ﷺ) gave license to 'Abd al-Rahman b. 'Awf and al-Zubair b. al-'Awwam to wear silk shirts during a journey because of an itch which they had
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Muhyi Al-Din Abdul HamidSahih
Zubair Ali ZaiSahih Bukhari (2919) Sahih Muslim (2076)
In-book reference: 34:37